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                [Lydsy2017年4月月赛]平方计数器                </h1>
                <p>时间限制：40s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div>给定一个长度为n的非负整数序列a_1,a_2,?,a_n，你需要支持以下三种类型的操作：</div>
<div>1.给定l,r，满足1&le;l&le;r&le;n，将a_l,a_(l+1),?,a_r依次修改为a_l^2,a_(l+1)^2,?,a_r^2。</div>
<div>2.给定l,r,x，满足1&le;l&le;r&le;n,0&le;x&lt;2017，将a_l,a_(l+1),?,a_r分别修改为x。</div>
<div>3.给定l,r，满足1&le;l&le;r&le;n，统计a_l,a_(l+1),?,a_r在模2017意义下有多少个互不相同的数字。</div>
<div>现在按时间顺序给出m个操作，你需要给出第三种操作的结果。</div>
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<div></div>
<div></div></p><hr/><h3>输入格式</h3><p><div>第一行包含一个正整数T，表示有T组数据，满足T&le;200。</div>
<div>接下来依次给出每组测试数据。对于每组测试数据：</div>
<div>第一行包含两个正整数n和m，满足1&le;n,m&le;10^5。</div>
<div>第二行包含n个非负整数，表示a_1,a_2,?,a_n，满足0&le;a_i&lt;2017。</div>
<div>接下来m行按时间顺序描述所有操作。每行表示一个操作，第一个整数是s，表示这是第s种操作，满足1&le;s&le;3，其他参数紧跟其后。</div>
<div>约10组数据满足n&ge;10^3或m&ge;10^3。</div>
<div></div>
<div></div></p><hr/><h3>输出格式</h3><p><p>对于每个第三种操作，输出一行一个正整数表示答案。</p>
<div></div>
<div></div></p><hr/><h3>样例输入</h3><pre>1
5 6
1 2 3 4 5
3 1 5
1 1 4
1 2 3
3 2 4
2 3 5 4
3 1 5</pre><hr/><h3>样例输出</h3><pre>5
2
3</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>鸣谢Tangjz提供试题</p>
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